【正文】 摘要 筆記本電腦，便于攜帶，體積小，而且它的功能滿足大多數(shù)人的需要，隨著科學(xué)技術(shù)的近步帶來的成本下降，筆記本的價格也為大多數(shù)人所接受。隨著使用筆記本人數(shù)的增加，筆記本的各種問題也暴露出來，除了性價比之外，最關(guān)心的莫過于散熱。筆記本在性能與便攜性對抗中，散熱成為最關(guān)鍵的因素，筆記本散熱一直是筆記本核心技術(shù)中的瓶頸。有時筆記本電腦會意外的死機，一般就是系統(tǒng)溫度過高導(dǎo)致。為了解決這個問題，人們設(shè)計了散熱底座，可以使筆記本產(chǎn)生的熱量盡快的擴散到電腦外部，不影響筆記本的使用功能，不會使電腦的線路出現(xiàn)腐蝕現(xiàn)象，保證筆 記本電腦的正常工作。好的底座可以很大的延長筆記本電腦使用壽命。 本設(shè)計針對散熱問題做了深入的探討，并設(shè)計出一套基于單片機控制的智能散熱底座，綜合了成本和性能等相關(guān)因素，采用了 STC 公司以 STC90C51 核心搭建了該系統(tǒng)。在本著成本控制和推向市場的前提下，文中的電路簡約而易于批量生產(chǎn)，在完成散熱功能和最少成本的前提下達到了節(jié)能和智能。 關(guān)鍵詞 ： 散熱底座；單片機；智能控制 ABSTRACT Notebook puter, portability, small size, and its function meet the needs of most people, with the step of science and technology has brought costs down, notebook prices also acceptable to most people. With the increasing number of problems using a laptop, notebook is exposed outside, in addition to price, most concerned about is nothing more than the heat. Notebook in performance and portability against heat, bee the most crucial factor, notebook cooling has been a bottleneck in the core technology of notebook. Sometimes the notebook puter will accidentally crashes, is the general system high temperature led. In order to solve this problem, people design the heat sink base, can make the notebook produced heat diffusion to the puter as soon as possible outside, does not affect the use of notebook function, not the puter line corrosion phenomenon, ensure the normal work of notebook puter. Good base can greatly prolong the service life of notebook puter. The design for the radiation problem is discussed in detail, and design a set of intelligent heat dissipation base based on singlechip microputer control, the relevant factors of cost and performance, using the STC pany to build the system of STC90C51 core. In the spirit of the cost control and the market under the premise, the circuit simple and easy mass production, save energy and intelligence in the premise radiation function and the minimum cost. Key Words： Cooling base Micro control unit Intelligent control目 錄 第一章 緒言 .................................................................................................................. 1 第一節(jié) 系統(tǒng)研究背景 ........................................................................................... 1 第二節(jié) 散熱原理和方式 ....................................................................................... 1 第三節(jié) 筆記本散熱底座設(shè)計 ............................................................................... 2 第二章 系統(tǒng) 方案論證 .................................................................................................. 3 第一節(jié) 系統(tǒng)框圖 ................................................................................................... 3 第二節(jié) 各模塊方案論證 ....................................................................................... 3 第三章 系統(tǒng)硬件設(shè)計 .................................................................................................. 5 第一節(jié) 單片機 STC90C516 RD ........................................................................... 5 第二節(jié) 溫度傳感器電路 ....................................................................................... 8 第三節(jié) 直流電機驅(qū)動電路 ................................................................................. 11 第四節(jié) 串口通信電路 ......................................................................................... 13 第五節(jié) 電源電路 ................................................................................................. 14